U.S. Army Corps of Engineers project manager Dan Tibbitts (center) shares a handful of soil from a Sacramento River levee with Brig. Gen. Michael Wehr, commander of the Corpsâ South Pacific Division, to explain how its sandy composition threatens levee stability during a tour with Maj. Gen. Michael J. Walsh (second from left), the Corpsâ Deputy Commanding General for Civil and Emergency Operations, in Sacramento, Calif., July 19, 2012. Walsh oversees all of the Corpsâ flood risk reduction projects in California, including Sacramento levee improvements and the construction of Folsom Damâs new auxiliary spillway. (U.S. Army Photo by Chris Gray-Garcia/Released)

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